Analog threshold decoder

Details Analog threshold decoder Analog threshold decoder

1982-10-29

1985-05-21

Atkinson, Charles E.

Excavating

G06F 1110

Patent

active

045190801

ABSTRACT:
A modified Type I decoder generates analog syndrome bits from a selected combination of analog signals representing bits yet to be decoded and digital signals representing already decoded information bits. A selected combination of analog syndrome bits is used to generate a weighted majority decision by analog summation. The weighted majority decision is compared to a variable threshold signal which is proportional to the analog magnitude of the bit being decoded. The decision signal which results from this comparison is used to correct the digital value of the bit being decoded. The required number of analog multipliers is reduced by coupling a plurality of multipliers in series and storing the outputs from different analog multipliers in respective analog storage devices.

REFERENCES:
patent: 4130818 (1978-12-01), Snyder, Jr.
patent: 4322848 (1982-03-01), Snyder, Jr.
patent: 4328582 (1982-05-01), Battail et al.
patent: 4404674 (1983-09-01), Rhodes

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